CN2440750Y - Penta-component earth electromagnetic assembly on ocean floor - Google Patents

Abstract

The five-component submarine magnetotelluric instrument assembly belongs to the field of marine physical detection equipment. It adopts floating balls, a cross-shaped trapezoidal platform cement hanging weight, a well-shaped instrument base with trapezoidal grooves, and multiple water holes on the instrument box. It solves special technical problems in ocean exploration, including sealing, pressure bearing, corrosion protection, leveling, shock resistance, and special requirements for the overall operational performance of the instrument under ocean conditions, such as the need to reduce seawater resistance and thrust as much as possible. , Attitude balance during the sinking process, and the ability to work under static conditions on the seabed.

Description

Five-component submarine magnetotelluric instrument assembly

The utility model belongs to the field of marine physical detection equipment and relates to a five-component submarine magnetotelluric instrument assembly.

In addition to solving special technical problems relative to land-based measurements, ocean exploration—such as sealing, pressure bearing, anti-corrosion, leveling, shock resistance, and miniaturization of circuits with low power consumption, high-precision synchronization of clocks, and intelligent data acquisition on the seabed , There are also special requirements for the overall operational performance of the instrument under ocean conditions, such as the need to reduce seawater resistance and thrust as much as possible, balance the attitude during the sinking process, and be able to work safely under static conditions on the seabed, etc.

In view of the above work requirements, the purpose of this utility model is to provide the assembled components that can work safely and reliably, and to provide a reasonable assembly that can ensure that the entire process of the instrument from sinking into the water-underwater work-out of the water is stable, safe and reliable, and the instrument can work effectively. Structure - five-component submarine magnetotelluric instrument assembly.

Above-mentioned object is realized by following scheme.

A five-component submarine magnetotelluric instrument assembly, including a floating ball 2, an acoustic release device 17, a pressure chamber 6 for a submarine electromagnetic measuring instrument, an underwater extension measuring arm 7 for an electric field sensor, and a trapezoidal platform for hanging weight Concrete pier 10 and the instrument box 5 and base 8 on which the above components are installed. The four walls and the top of the box 5 are framed by connecting stainless steel materials. The base 8 is a well with a trapezoidal groove in the center Glyph frame, 5 floating balls 2 are installed on the top of the box body 5, the lifting beam 1 above it is connected with the stainless steel frame of the box body 5, and the acoustic release device 17 is vertically installed and stretched out on the top of the box body. The pressure chamber 6 of the electromagnetic measuring instrument is placed horizontally, and a total of 3 subsea magnetic field sensor pressure chambers 19 are installed respectively along the X, Y, and Z coordinate directions. A magnetic field sensor is housed in each pressure chamber, and the outer end cover A watertight plug is installed on the top, and four underwater stretching measuring arms 7 with electric field sensors installed on the head are installed in the lower part of the box body 5 in parallel and staggered along the horizontal X and Y directions. The whole of the time-hanging weight is cross-shaped, and the central part is a trapezoidal platform cement pier 10 with a trapezoidal boss. Through the anchor chain 11, the adjustable positive and negative nut mechanism 14 and the detachable hook 15 are connected to the instrument box. The trapezoidal boss slope matches the trapezoidal groove slope of the well-shaped base 8, and between the two slopes and between the base 8 and the plane around the trapezoidal cement pier 10, there is an elastic rubber buffer pad 9 that surrounds a full circle, and when launching The detachable wooden spacer 12 is shaped on at least two water holes 13 on each side wall of the casing 5 .

The outer layer of the stainless steel frame of the box body 5 is a polypropylene plate 4, and the corrosion-prone part of the inner layer stainless steel frame is pasted with a zinc plate as a sacrificial anode.

The outside of the floating ball 2 is provided with a frame-type metal protective hoop 3 .

The watertight plugs of the measuring instrument pressure chamber 6 and the three pressure chambers 19 are provided with frame-type plastic protective covers 18 and 20 .

Accompanying drawing 1 is the front view of the utility model.

Accompanying drawing 2 is the left view of the utility model.

Accompanying drawing 3 is the top view of the utility model.

Accompanying drawing 4 is the schematic diagram of the structure of the base of the utility model.

Accompanying drawing 5 is the structural representation of cement pier of the utility model.

Embodiment is described in conjunction with accompanying drawing:

As shown in Figure 1 and Figure 2, the four walls and the top of the box body 5 are made of stainless steel frame, and its outer layer is covered with polypropylene plastic plate, which not only has good corrosion resistance, but also does not increase the buoyancy of the system because its specific gravity is smaller than that of water Burden, the outside of the five floating balls 2 installed on the top of the box body 5 is covered with a frame-type metal protective hoop 3 to prevent the floating balls from being shattered, and a protective cover 18 is also installed at the extension end of the watertight plug 6 in the pressure cabin. The release device 17 is installed vertically upwards and protrudes above the top of the box body. A submarine electromagnetic measuring instrument pressurized cabin 6 is placed horizontally, and a total of 3 submarine magnetic field sensors installed along the X, Y, and Z coordinate directions are respectively installed under pressure. Cabin 19, a magnetic field sensor is housed in each pressurized cabin, a watertight plug is housed on the outer end cover, and 4 electric field sensors are installed in the lower part of the box body 5. on the floor area. As shown in Figure 3 and Figure 4, the bottom 8 of the box is made into a well-shaped frame and matched with the cross-shaped structure of the cement pier. After entering the water, 4 holes can be formed and 4 water columns will be generated, so that the sinking process of the instrument is very stable. In addition, the structure of the trapezoidal table not only prevents the whole set of instruments from rotating due to the promotion of water flow, but also maintains a stable static measurement working state, and it is also easy to detach from the cement pier when the instrument needs to be floated and unhooked to get rid of the cement pier after completing the operation. Between the trapezoidal inclined surface and the platform surface that base 5 contacts with cement pier 10, elastic rubber buffer pad 9 is placed, before launching, for preventing the buffer pad from being excessively compressed, there is a wooden block 12 that can be removed when launching in the middle pad.

The water hole 13 on the side wall of the casing 5 can reduce the thrust of seawater on the instrument.

Due to the adoption of the above scheme, the utility model not only has the characteristics of good pressure bearing, sealing and anti-corrosion performance, reliable strength and rigidity, and no magnetism, but also has the characteristics of compact structure, coordinated work of various components, stable water sinking and water outlet process, Underwater, it will not rotate due to the promotion of water flow, so it can work safely and effectively under static conditions and has the advantages of very convenient loading and unloading. It is suitable for oil exploration, mineral deposit survey, seabed geological structure exploration and continental shelf division survey, etc.

Claims (4)

1, a kind of five component marine magnetotelluric instrument assemblies, include ball float (2), acoustics releaser (17), it is characterized in that, also include seabed electromagnetic measurement instrument pressure-bearing cabin (6), electric-field sensor is upheld gage beam (7) under water, as hanging heavy bucking ladder clump (10) and instrument box (5) and the base (8) that above-mentioned parts are installed, described casing is to connect framework (5) external packets that forms by stainless steel to constitute with polypropylene board (4), described base (8) is the groined type framework that a core has trapezoidal groove, 5 ball floats (2) are contained in the top of casing (5), bale handle above it (1) links with the corrosion-resistant steel framework (5) of casing, acoustics releaser (17) is installed vertically upward and is stretched out on the casing top, one seabed electromagnetic measurement instrument pressure-bearing cabin (6) horizontal positioned, other has along X, Y, the magnetic field sensor pressure-bearing cabin, totally 3 seabeds (19) that Z three coordinate directions are installed respectively, a magnetic field sensor is housed in each pressure-bearing cabin, a weather proof receptacle is housed on the outer end cap, the bottom is equipped with 4 along horizontal X in casing (5), the Y direction is parallel, and stagger its head of stretching out is equipped with the gage beam of extension under water (7) of electric-field sensor, below base, hang heavy integral body when sinking and be criss-cross as instrument, core is the bucking ladder clump (10) of trapezoid boss, by anchor chain (11), but the positive and negative nut body (14) of roll adjustment and the hook (15) that can throw off link to each other with instrument box, the trapezoidal groove inclined-plane of its trapezoid boss inclined-plane and groined type base (8) is complementary, between this two inclined-plane and base (8) and trapezoidal clump (10) be equipped with between the plane all around and surround the whole elastic caoutchouc cushion rubber (9) that encloses, and the following wooden cushion block of detouchable (12) during water, on each sidewall of casing (5), be shaped at least 2 water holes (13).

By the described marine magnetotelluric instrument of claim 1 assembly, it is characterized in that 2, the zine plate as sacrificial anode is posted at the easy erosion position of casing internal layer stainless steel frame (5).

By the described marine magnetotelluric instrument of claim 1 assembly, it is characterized in that 3, ball float (2) outside is provided with frame-type metal coating hoop (3).

By the described marine magnetotelluric instrument of claim 1 assembly, it is characterized in that 4, the weather proof receptacle in survey meter pressure-bearing cabin (6) and 3 pressure-bearing cabins (19) is provided with frame-type plastics protection outer cover (18) and (20).

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